<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- Layout 布局 -->
      <el-row>
        <el-col>
          <!-- 添加角色按钮 -->
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 渲染角色列表 -->
      <el-table :data="rolesList" stripe border style="width: 100%">
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :gutter="20"
              v-for="(item1,i1) in scope.row.children"
              :key="item1.id"
              :class="['bottomBorder',i1==0 ? 'topBorder':'','vCenter']"
            >
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <el-col :span="19">
                <el-row
                  :class="[i2==0 ? '':'topBorder','vCenter']"
                  v-for="(item2,i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row,item2.id)"
                    >{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightById(scope.row,item3.id)"
                    >{{item2.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="roleName" label="角色名称"></el-table-column>
        <el-table-column prop="roleDesc" label="角色描述"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
            <el-button
              type="warning"
              icon="el-icon-setting"
              size="mini"
              @click="showRightDialog(scope.row)"
            >分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 分配权限的对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="showRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <!-- Tree 树形控件 -->
      <el-tree
        :data="rightsList"
        ref="treeRef"
        :props="treeProps"
        show-checkbox
        node-key="id"
        :default-expand-all="true"
        :default-checked-keys="defkeys"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="showRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
      rolesList: [],
      showRightDialogVisible: false,
      rightsList: [],
      treeProps: {
        children: "children",
        label: "authName"
      },
      defkeys: [],
      roleId: ""
    };
  },
  created() {
    this.getRolesList();
  },
  methods: {
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");
      // console.log(res);
      if (res.meta.status != 200) return this.$message.error(res.meta.msg);
      this.rolesList = res.data;
      // console.log(this.rolesList);
    },
    async removeRightById(role, rightId) {
      // console.log(id);
      const confirmResult = await this.$confirm(
        "此操作将永久删除该权限, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err);
      if (confirmResult !== "confirm") return this.$message.info("已取消删除");
      // console.log("删除成功");
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      );
      if (res.meta.status != 200) return this.$message.error(res.meta.msg);
      role.children = res.data;
    },
    async showRightDialog(role) {
      this.roleId = role.id;
      const { data: res } = await this.$http.get("rights/tree");
      if (res.meta.status != 200) return this.$message.error(res.meta.msg);
      this.rightsList = res.data;
      this.getLeafKeys(role, this.defkeys);
      // console.log(this.rightsList);
      this.showRightDialogVisible = true;
    },
    getLeafKeys(node, arr) {
      if (!node.children) {
        return arr.push(node.id);
      }
      node.children.forEach(item => {
        this.getLeafKeys(item, arr);
      });
    },
    setRightDialogClosed() {
      this.defkeys = [];
    },
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ];
      // console.log(keys);
      const idstr = keys.join(",");

      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idstr }
      );
      // console.log(res);

      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.$message.success(res.meta.msg);
      this.getRolesList();
      this.showRightDialogVisible = false;
    }
  }
};
</script>
<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.topBorder {
  border-top: 1px solid pink;
}
.bottomBorder {
  border-bottom: 1px solid pink;
}
.vCenter {
  display: flex;
  align-items: center;
}
</style>